Just add a little water and put it in the microwave.
The soother is made of 100% siliconeUltra Soft and Ultra Air pacifiers are made of silicone because it is a safe and inert material, widely used for medical purposes, does not contain dangerous chemicals, hormonally active substances (e.Features:- Can be sterilised and stored in a practical case- Convenient sterilisation in 3 minutes- Calming thanks to increased airflow- Allows baby's skin to breathe- Comfortable soother made of soft and squishy material- Baby feels natural- 98% success rate of pacifier acceptance- The soother is made of 100% food-safe silicone- Natural development of the oral cavity- Quality guaranteed- Designed and manufactured in the Netherlands- Allows baby's skin to breathe- Thanks to the large holes, baby's skin can breathe, so it stays drier when soothed. Extra-large air vents allow for more comfortable calming.